scholarly journals PARTIAL INTERACTION SHEAR FLOW FORCES IN SIMPLY SUPPORTED COMPOSITE STEEL-CONCRETE BEAMS

2019 ◽  
Keyword(s):  
Shear Flow ◽  
Concrete Beams ◽  
Simply Supported ◽  
Partial Interaction ◽  
Composite Steel

scholarly journals About the use of semi-continuity in simply supported composite steel and concrete beams, to remove fireproof coatings for standard-fire resistance requirement of less than 30 minutes

2019 ◽  
Vol 12 (5) ◽  
pp. 1183-1204
Author(s):  
L. C. ROMAGNOLI ◽  
V. P. SILVA
Keyword(s):  
Fire Resistance ◽  
Concrete Beams ◽  
Local Buckling ◽  
Rotational Stiffness ◽  
Design Code ◽  
Simply Supported ◽  
Standard Fire ◽  
Equivalent Time ◽  
Lower Standard ◽  
Composite Steel

Abstract Previous studies of the behavior under fire conditions of composite steel and concrete beams, not subjected to local buckling (compact steel profile), showed that it’s not possible to justify, by design code methods, the absence of fire coating for 30 minutes standard-fire resistance requirement, even when considering the support rotational stiffness provided by the upper longitudinal slab reinforcement (semi-continuity). The purpose of this work is to verify the viability of this proposal for lower standard-fire resistance time, which, although rare, may occur with the use of the equivalent time method.

Partial interaction in composite steel and concrete beams with full shear connection

1997 ◽  
Vol 41 (2-3) ◽  
pp. 235-248 ◽  
Author(s):  
Deric J. Oehlers ◽  
Ninh T. Nguyen ◽  
Marfique Ahmed ◽  
Mark A. Bradford
Keyword(s):  
Concrete Beams ◽  
Shear Connection ◽  
Partial Interaction ◽  
Composite Steel

Experimental Research on the Composite Steel-Concrete Beams with Partial Shear Connection

2011 ◽  
Vol 71-78 ◽  
pp. 954-958 ◽  
Author(s):  
Guo Fu ◽  
Wei Cui
Keyword(s):  
Experimental Research ◽  
Concrete Beams ◽  
Experimental Results ◽  
Simply Supported ◽  
Shear Connection ◽  
Steel Sections ◽  
Interface Slip ◽  
Theoretical Analyses ◽  
Good Agreement ◽  
Composite Steel

Experiments were conducted on 5 simply-supported composite steel-concrete beams (SCB) with compact steel sections to investigate their deflection behaviors. The influences of degree of shear connection and stud arrangement are discussed. The load-deflection relationships and the interface slip distribution along the span of the beam are analyzed. Based on the experimental research and theoretical analyses, the formulae are derived for the rigidity of the composite steel-concrete beams with partial shear connection. The predicted of deflection values are in good agreement with the experimental results.

scholarly journals About the use of semi-continuity to remove fireproof coatings in simply supported composite steel and concrete beams

2018 ◽  
Vol 11 (2) ◽  
pp. 296-306
Author(s):  
L. C. ROMAGNOLI ◽  
V. P. SILVA
Keyword(s):  
Lower Cost ◽  
Concrete Beams ◽  
Local Buckling ◽  
Bending Moment ◽  
Composite Beams ◽  
Design Code ◽  
Simply Supported ◽  
Additional Procedure ◽  
Composite Steel ◽  
Fire Conditions

Abstract The behavior under fire conditions of composite steel and concrete beams, not subjected to local buckling (compact steel profile), was studied considering the support rotational stiffness provided by the upper longitudinal slab reinforcement, usually present by means of anti-cracking meshes, and restriction of the steel profile’s lower flange, additional procedure required for development of the support bending moment resistance. Usually composite beams at room temperature are designed as simply supported and the semi-rigidity provided by this longitudinal reinforcement, if considered under fire conditions, may lead to a lower cost solution for fire protection of composite beams. The purpose of this study is to verify the viability of this proposal, using simplified design code methods.

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